National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 6

You are standing upright in a room in front of a vertical mirror. In this mirror, you can see from your position, only the upper two-third part of your body. You wish to see the full image of your body in the mirror. Which combination of the following three courses of action will achieve this?
I. Move away from the mirror
II. Move towards the mirror
III. Use a mirror whose height will allow you to see your full image

A I only
B II only
C III only
D Either I or III


How come it is only option C and not D ?

Ans 1:

Class : Class 8
Try standing in front of a mirror where only two-thirds of your body is visible. You will find it quite impossible to see the whole of yourself, even by moving away. that's why the answer is option c only.

Ans 2:

Class : Class 7
But I think it'd be d

Ans 3:

Class : Class 6
answer will be D

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7
what would be the answer???

Ans 3:

Class : Class 7
The answer is convergent,but what's its meaning?

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
The answer is A.

Ans 2:

Class : Class 6
The answer s A.

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

Refer to the given flow chart showing flow of energy in a food chain.

Select the correct statement regarding P, Q, R and S.
(i) S helps in cleaning of environment as well as recycling of nutrients.
(ii) The role of Q comes when plants and animals die.
(iii) P operate at all levels of food chain.
(iv) R eats other animals and get its food indirectly from P.

A (i) and (iv) only
B (i), (iii) and (iv) only
C (iii) and (iv) only
D (i), (ii), (iii) and (iv)


Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 2:

Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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